1912149 has 6 divisors (see below), whose sum is σ = 2762006. Its totient is φ = 1274760.

The previous prime is 1912147. The next prime is 1912159. The reversal of 1912149 is 9412191.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 777924 = 1065^2 + 882^2 .

It is not a de Polignac number, because 1912149 - 2¹ = 1912147 is a prime.

It is a Duffinian number.

1912149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106222 + ... + 106239.

2^1912149 is an apocalyptic number.

It is an amenable number.

1912149 is a deficient number, since it is larger than the sum of its proper divisors (849857).

1912149 is a wasteful number, since it uses less digits than its factorization.

1912149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212467 (or 212464 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 1912149 is about 1382.8047584529. The cubic root of 1912149 is about 124.1196598987.

The spelling of 1912149 in words is "one million, nine hundred twelve thousand, one hundred forty-nine".